<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/" separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChange()">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 编辑 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色 -->
                        <el-tooltip class="item" effect="dark" content="分配插槽" placement="top-start" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="400">
            </el-pagination>

            <!-- 添加用户的对话框 -->
            <el-dialog
            title="提示"
            :visible.sync="addDialogVisible"
            width="50%" @close="addDialogClosed">
            <!-- 内容主题区域 -->
                <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                    <el-form-item label="用户名" prop="name">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="addForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机" prop="mobile">
                        <el-input v-model="addForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <!-- 底部区域 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>

            <!-- 修改用户对话框 -->
            <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%" @close="editDialogClosed">
                <el-form :model="eidtForm" :rules="eidtFormRules" ref="editFormRef" label-width="70px">
                    <el-form-item label="用户名">
                        <el-input v-model="eidtForm.username" disabled></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="eidtForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机号" prop="mobile">
                        <el-input v-model="eidtForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="editDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="editUserInfo">确 定</el-button>
                </span>
            </el-dialog>
        </el-card>
    </div>
</template>

<script>
export default {
    data() {
        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                // 当前的页码数
                pagenum: 1,
                // 页大小
                pagesize: 2
            },
            // 用户列表
            userlist: [],
            total: 0,
            // 控制添加用户对话框的显示
            addDialogVisible: false,
            // 添加表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 添加表单验证规则对象
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur'},
                    { min: 3, max: 10, message: '用户名的长度在 3--10 个字之间', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur'},
                    { min: 3, max: 10, message: '密码的长度在 6--20 个字之间', trigger: 'blur' }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur'}, { validator: checkEmail, trigger: 'blur'}
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur'}, { validator: checkMobile, trigger: 'blur'}
                ]
            },
            // 控制修改用户对话框显示与因此
            editDialogVisible: false,
            // 保存编辑用户的数据
            editForm: [],
            // 修改表单的验证规则对象
            eidtFormRules: {
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            }
        }

        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            // todo 验证邮箱的正则
            const regEmail = /^/

            if (regEmail.test(value)) {
                // 合法的邮箱
                return cb();
            }

            cb(new Error('请输入合法的邮箱'));
        }

        // 验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            // todo 验证手机号的正则
            const regMobile = /^/

            if (regMobile.test(value)) {
                // 合法的邮箱
                return cb();
            }

            cb(new Error('请输入合法的手机号'));
        }
    },
    created() {
        this.getUserList();
    },
    methods: {
        async getUserList () {
            const {data: res} = await this.$http.get('users', { params: this.queryInfo });
            if (res.meta.status !== 200) {
                return this.$message.error('请求失败');
            }
            this.userlist = res.data.users;
            this.userlist = res.data.total;
        },
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
        console.log(newSize);
        this.queryInfo.pagesize = newSize;
        this.getUserList;
    },
    // 监听 页码 值改变事件
    handleCurrentChange (newPage) {
        this.queryInfo.pagenum = newPage;
        this.getUserList;
        console.log(newPage);
    },
    // 监听 switch 开关状态改变
    async userStateChange (userInfo) {
        console.log(userInfo);
        await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`);
        if (res.meta.status !== 200) {
            userInfo.mg_state = !userInfo.mg_state;
            return this.$message.error('更新状态失败');
        }
        return this.$message.success('更新状态成功');
    },

    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
        this.$refs.addFormRef.resetFields();
    },

    // 点击按钮，添加新用户
    addUser () {
        this.$refs.addFormRef.validate(async valid => {
            if (!validator) return

            // 可以发起网络请求
            const {data: res} = await this.$http.post('users', this.addForm)
            if (res.meta.status !== 201) {
                this.$message.error('添加用户失败');
            }

            this.$message.error('添加用户成功');
            // 隐藏添加用户的对话框
             this.addDialogVisible = false;
            //  冲洗获取用户列表
            this.getUserList
        });
    },
    // 编辑用户对话框
    async showEditDialog (id) {
        const {data: res} = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
            this.$message.error('编辑失败');
        }
        this.editForm = res.data;
        this.editDialogVisible = true
    },
    // 监听修改用户对话框关闭世界
    editDialogClosed () {
        this.$refs.editFormRef.resetFields();
    },
    // 修改用户信息并提交
    editUserInfo () {
        this.$refs.editFormRef.validate(async valid => {
            if (!valid) return

            // 发起修改用户的请求
            const {data: res} = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile})

            if (res.meta.status !== 200) {
                this.$message.error('更新用户信息失败');
            }

            // 关闭对话框
            this.editDialogVisible = false
            // 刷新列表
            this.getUserList()
            // 提示
            this.$message.success('修改用户信息成功')
        });
    },
    // 根据id删除用户
    async removeUserById (id) {
        // 弹框提示用户是否删除
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '删除用户', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => {
            return err
        })

        // 如果用户确认删除，则返回值为字符串 confirm
        // 如果用户取消删除，则返回字符串 cancel
        if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
        }

        const {data:res} = await this.$http.delete('users/' + id)

        if (res.meta.status !== 200) {
            this.$message.error('删除用户是黑白')
        }
        return this.$message.success('删除用户成功');

        // 刷新用户列表
        this.getUserList();
    }

}
</script>

<style lang="less" scoped>

</style>